# Category Archives: math

## Counting

My five-year-old has been able to rattle off the numbers in order into the teens for a while, but when you ask her to count a set of objects, she can only get up to three consistently. “One, two, three–um–five?” … Continue reading

Posted in children, math, numbers | Tagged | 3 Comments

## Latin Squares, Squared Squares, and Legoed Squares

I introduced my kids to Latin Squares the other day. If you know Sudoku then you have seen examples of Latin squares. The idea is to fill in a grid of squares with colors or numbers or some other symbols, … Continue reading

Posted in geometry, math, polyominoes | | 3 Comments

## An Evening of Math I

My wife has taken on the challenge of homeschooling our children this year. My main participation in this is a weekly math session with the kids in the evening on any subject of my choosing! Tonight was our first session. … Continue reading

Posted in children, math, numbers | | 1 Comment

## How to Eat an Equilateral Cheeseburger

My friend Sean worked out an elegant and practical solution to the Cheeseburger problem of my previous post.  I will try to summarize it here. There are fifteen toppings.  To make things simpler we’ll represent them with the numbers one … Continue reading

Posted in math | | 3 Comments

## Two Problems in Elementary Cheeseburger Theory

A favorite hamburger joint of mine has the following 15 choices for toppings: Mayo Relish Onions Lettuce Pickles Tomatoes Grilled Onions Grilled Mushrooms Ketchup Mustard Jalapeno Peppers Green Peppers A-1 Sauce Bar-B-Q Sauce Hot Sauce After much experimentation, I’ve decided … Continue reading

Posted in math | 6 Comments

## Latest picks from the library

Here are the two books that I grabbed recently from the library: How Math Works: 100 Ways Parents and Kids Can Share the Wonders of Mathematics, by Carol Vorderman.  Lots of activities here, but not all of them are all that … Continue reading